Bar code recognition program bar code recognition device, and bar code recognition method.

摘要

PROBLEM TO BE SOLVED: To highly speedily and precisely recognize a barcode.;SOLUTION: A target pixel in an image is moved at a predetermined movement interval, and various size image conversion filters corresponding to the movement interval are used, and the pixel whose concentration change in the predetermined reference direction is the largest among the pixels of the image is detected as an edge point candidate, and when edge strength is more than a predetermined threshold value, and the predetermined number of edge point candidates whose edge strength is more than a predetermined threshold, and whose edge directions are within a predetermined angle from the reference direction are continuous in the orthogonal direction of the reference direction, it is decided that the predetermined number of edge point candidates are edge points, and a histogram is calculated by adding the number of edge points to the reference direction and the orthogonal direction, and the position of a barcode in the image is recognized based on the histogram.;COPYRIGHT: (C)2006,JPO&NCIPI